Modeling Trains with 3D printers

I have always known that folks that get into model trains can get a little carried away with it.  Well here is a gent that is modeling several narrow gauge trains and modeling them for …well toy trains in my opinion.  Me, I would not go this far, but it shows another example of where the 3D technology can be applied.

http://hackaday.com/2013/03/04/preserving-locomotives-with-3d-laser-scanning-and-3d-printing/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+hackaday%2FLgoM+%28Hack+a+Day%29